Abstract:
To provide a reflection plate and a reflection type liquid crystal display apparatus, in which a light from a light source of a fluorescent light or the sun light can be effectively used to thereby increase an amount of lights to be reflected to an observer side so that a bright display can be obtained, and a method of manufacturing the same.
Abstract:
Disclosed is a fringe field switching liquid crystal display, which prevents disclination lines from being created at a wedge section and improves liquid crystal polarization efficiency of a pixel electrode. The fringe field switching liquid crystal display comprises upper and lower substrates arranged while forming a space between them, a conductive black matrix formed on a lower surface of the upper substrate, a common electrode formed on an upper surface of the lower substrate, a gate insulation layer formed on an upper surface of the common electrode, and a pixel electrode formed on an upper surface of the gate insulation layer. Herein, the pixel electrode forms an electric field and includes a fringe portion having a saw-tooth shape, which forms one of 1-domain and 2-domain among the pixel electrode, the conductive black matrix, and the common electrode.
Abstract:
An electrophoretic display includes a first substrate disposed on a viewer side, a second substrate disposed at a predetermined spacing with the first substrate, a first electrode disposed on the first substrate side, a second electrode disposed on the second electrode side, liquid disposed at the predetermined spacing, and a plurality of charged particles dispersed in the liquid. The charged particles are movable by changing a polarity of a voltage applied between the first and second electrodes to effect display. The second electrode at a pixel has a surface area larger than that of the first electrode at the pixel.
Abstract:
A waveguide optical modulator has a first Y-branch optical waveguide providing an input port, a second Y-branch optical waveguide providing an output port, first and second optical waveguides interconnecting the first and second Y-branch optical waveguides, first and second signal electrodes disposed respectively on the first and second optical waveguides, and a ground electrode having a potential difference with the first and second signal electrodes and operable in coaction with the first and second signal electrodes for applying an electric field to the first and second optical waveguides. The ground electrode includes a central ground electrode disposed between the first and second optical waveguides, the central ground electrode having an opening defined therein. With this arrangement, since the central ground electrode disposed between the first and second optical waveguides has the opening, a waveguide substrate as a microwave resonance chamber has increased characteristics for effectively suppressing a dip in the frequency vs. response characteristics.
Abstract:
A liquid crystal display device includes first and second common electrode lines on a substrate extending along a first direction, a pair of adjacent data lines extending along a second direction perpendicular to the first direction to cross the first and second common electrode lines to define a unit pixel region, a gate line extending between the first and second common electrode lines along the first direction and crossing the pair of adjacent data lines, the first and second common electrode lines spaced apart from the gate line by a first distance along the second direction defining a first pixel region and a second pixel region of the unit pixel region, and a thin film transistor formed at the crossing of the gate line and one of the pair of adjacent data lines, the thin film transistor including a pair of drain electrodes, a source electrode, and a portion of the gate line, wherein each of the first and second pixel regions includes a circular pixel electrode and first and second circular common electrodes.
Abstract:
An in-plane switching liquid crystal display device is designed in such a way that an angle defined by the lengthwise direction of a common electrode and a pixel electrode and a rubbing direction of an alignment layer is set to 10 to 20°, a cell gap d is set to 2.7 μm or smaller, the dielectric anisotropy Δε of a liquid crystal constituting a liquid crystal layer is set to 8 to 20, a white voltage Vwhite to be applied to the pixel electrode when displaying white is set to 4 to 7 V, and the white voltage Vwhite (V), the dielectric anisotropy Δε of the liquid crystal, the cell gap d (μm) and an interval L (μm) between the common electrode and the pixel electrode satisfy the following expression. 11.8 > V white d - 0.6 × L 0.5 × Δ ɛ - 0.5 > 9.8
Abstract:
An array substrate for in-plane switching (IPS) mode liquid crystal display (LCD) device includes a gate line and a common line in a horizontal direction on a substrate, a data line crossing the gate line and the common line, a pixel electrode and a common electrode on the substrate, and a thin film transistor at a crossing point of the gate line and the data line, the thin film transistor having a gate electrode, an active layer and source and drain electrodes, the gate electrode having a slope that satisfies a numeral expression |θR−θg|=89°˜91° (degree) wherein θR is an angle of a rubbing direction measured from an arbitrary horizontal line and θg is an angle of the slope of the gate electrode measured from the arbitrary horizontal line.
Abstract:
A multi-domain IPS (in-plane switching) liquid crystal display (20) includes a first substrate (201), a second substrate (202), liquid crystal molecules (203) filled between the first and second substrates, and gate lines (211) and data lines (212) formed on the first substrate. The gate lines and data lines define pixel regions arranged in a matrix. Each pixel region includes pixel electrodes (233), common electrodes (243), and a TFT (thin film transistor) (220). The pixel electrodes and the common electrodes have a same curved shape, and are uniformly spaced apart from each other. Therefore the electric field generated by them is a smooth continuum of multiple domains, and the visual performance at various different viewing angles is equally good. Because the pixel and common electrodes do not have sharp bends, disclination is avoided. Therefore the IPS liquid crystal display has a high contrast ratio.
Abstract:
A semiconductor optical modulator, a Mach-Zehnder optical modulator employing the same, and a method of manufacturing a semiconductor optical modulator that are suitable for high-speed baseband communication are provided. An optical waveguide core layer is formed in such a manner that it alternately crosses micro optical modulator elements and gap regions, which are formed by placing electrically insulating material at predetermined intervals on an electrically conductive substrate. The core layer is connected to a signal electrode portion via a conductive semiconductor portion in each micro optical modulator element. A ground electrode is connected to the core layer via the conductive substrate. Further, the signal electrode portions are connected in a series to form a signal electrode by means of in-between metal wirings. Conductive semiconductor material is located between the core layer and the electrodes. In the gap regions, the core layer is sandwiched between insulating semiconductor layers.
Abstract:
An LCD device (2) includes two substrates (21, 22), a liquid crystal layer (27) therebetween, and gate lines (24) and data lines (23) formed on one substrate thereby defining pixel regions. A set of pixel electrodes (26) and a set of common electrodes (25) are provided in each pixel region. A first subset of the pixel electrodes and a first subset of the common electrodes are disposed parallel to each other in alternating fashion and extend along a first horizontal axis, a second subset of the pixel electrodes and a second subset of the common electrodes are disposed parallel to each other in alternating fashion and extend along a second horizontal axis, and the first and second axes are inclined at respective angles relative to the data lines. Thus when voltage is applied, liquid crystal molecules are twisted in two different directions (281, 282) so as to reduce color shift.